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| Patents for Russell B. Tewksbury | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,082,282 | Dec. 23, 1913 | H.W. Oster, R.B. Tewksbury | Die-stock | taps and dies | |
| 1,132,486 | Mar. 16, 1915 | H.W. Oster | Tire holder and lock | automobile accessories | |
| 1,361,400 | Dec. 07, 1920 | R.B. Tewksbury, H.W. Oster | Diestock | taps and dies | |